/**
 * Copyright (c) 2011 Alexander De Leon Battista
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package es.upm.oeg.presto.resolver.impl;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import net.xeoh.plugins.base.annotations.PluginImplementation;
import net.xeoh.plugins.base.annotations.events.PluginLoaded;

import org.restlet.data.MediaType;

import es.upm.oeg.presto.api.RepresentationAPI;
import es.upm.oeg.presto.resolver.RepresentationRegistry;

/**
 * @author Alexander De Leon
 */
@PluginImplementation
public class RepresentationRegistryImpl implements RepresentationRegistry {

	private final Set<RepresentationAPI> representaions = new HashSet<RepresentationAPI>();
	private final Map<String, Set<RepresentationAPI>> representationsByShortName = new HashMap<String, Set<RepresentationAPI>>();
	private final Map<MediaType, RepresentationAPI> representationsByMediaType = new HashMap<MediaType, RepresentationAPI>();

	@PluginLoaded
	public void registerRepresentation(RepresentationAPI representation) {
		representaions.add(representation);
		representationsByMediaType.put(representation.getMediaType(), representation);
		Set<RepresentationAPI> set = representationsByShortName.get(representation.getShortName());
		if (set == null) {
			set = new HashSet<RepresentationAPI>();
			representationsByShortName.put(representation.getShortName(), set);
		}
		set.add(representation);
	}

	@Override
	public List<MediaType> getMediaTypes(Collection<RepresentationAPI> representations) {
		List<MediaType> mediaTypes = new ArrayList<MediaType>();
		for (RepresentationAPI representation : representations) {
			mediaTypes.add(representation.getMediaType());
		}
		return mediaTypes;
	}

	@Override
	public Collection<RepresentationAPI> getRepresentations() {
		return representaions;
	}

	@Override
	public Collection<RepresentationAPI> getRepresentations(String shortName) {
		return representationsByShortName.get(shortName);
	}

	@Override
	public RepresentationAPI getRepresentation(MediaType mediaType) {
		return representationsByMediaType.get(mediaType);
	}

}
